Grigor’ev, A. A., and V. I. Gromak. “The Power Expansions of the Solutions of the First Painlevé Hierarchy”. Mathematical Modelling and Analysis 11, no. 4 (December 31, 2006): 389-398. Accessed September 20, 2024. https://btp.vgtu.lt/index.php/MMA/article/view/9648.